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发明名称
Lawn mower sharpener
摘要
申请公布号
US2704949(A)
申请公布日期
1955.03.29
申请号
US19530379156
申请日期
1953.09.09
申请人
D. R. CUMMING
发明人
CUMMING WILLIAM O.
分类号
B23D71/00
主分类号
B23D71/00
代理机构
代理人
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地址
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